Epro A6740/12 16-Channel Relay Output Module
$178.00
$390.00
Description
Product Description
The A6740/12 relay output module from Emerson EPRO is designed for machinery protection systems requiring deterministic and high-integrity switching signals. Installed within AMS 6500 and MMS 6000 platforms, this module converts monitored condition signals into discrete relay outputs for alarms, shutdown interlocks, and external control systems.
Engineered for critical rotating equipment, the module integrates 16 independent relay channels with flexible logic configuration. It supports complex decision-making through programmable Boolean logic and configurable delay functions, allowing precise response to machine condition events such as vibration, overspeed, or displacement limits.
Its hot-swappable design ensures continuous operation during maintenance, a key requirement in high-availability environments such as turbines and compressors.
Functional Overview
The A6740/12 acts as a signal execution layer within a machinery protection system. It receives processed condition signals from monitoring modules and translates them into relay actions. Key operational capabilities include:
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Configurable relay actuation based on alarm states (Alert, Danger, OK)
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Support for logical combinations such as AND, OR, and 2oo3 voting
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Time-delayed switching for controlled shutdown sequences
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Redundant relay configuration to enhance system reliability
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Relay Output Module |
| Relay Channels | 16 × SPDT (Single Pole Double Throw) |
| Contact Rating | Up to 5 A @ 250 V AC / 30 V DC |
| Switching Time | < 5 ms |
| Control Voltage | 24 V DC (13–32 V DC range) |
| Relay Modes | NO/NC selectable, energized or de-energized configurable |
| Logic Functions | AND, OR, 2-out-of-3 voting, combinational logic |
| Max Logic Expressions | Up to 30 per module |
| Input Signals | Up to 60 system inputs (Alert, Danger, OK states) |
| Time Delay | Adjustable from 0 to 30 seconds |
| Communication | Integrated via system backplane (AMS 6500 / MMS 6000) |
| Form Factor | 3U Eurocard, 2-slot width |
| Module Width | 12TE (MMS 6000 rack), 10TE variant for AMS 6500 |
| Dimensions | 60 × 128 × 160 mm |
| Weight | 0.45 kg |
| Hot Swap | Supported (API 670 compliant systems) |
Environmental and Compliance Data
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Operating Temperature: –40°C to +85°C (system dependent)
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Protection Rating: Up to IP65 (AMS 6500 installation)
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Vibration Resistance: IEC 68-2-6 (0.15 mm, 10–55 Hz; 19.6 m/s², 55–150 Hz)
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Shock Resistance: IEC 68-2-29 (98 m/s², 16 ms)
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Compliance: API 670, CE, RoHS
Application Areas
The A6740/12 is typically applied in safety-critical monitoring and protection systems for rotating machinery:
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Steam and gas turbines
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Centrifugal and reciprocating compressors
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Hydro turbines and generators
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Petrochemical and refinery equipment
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Power generation facilities
FAQ
Q: What distinguishes the A6740/12 from standard relay modules?
A: It is specifically designed for machinery protection systems with API 670 compliance, offering advanced logic handling and high-reliability relay switching.
Q: Can the module be replaced without shutting down the system?
A: Yes, it supports hot-swapping when used within compatible AMS 6500 or MMS 6000 racks.
Q: How many input conditions can be processed?
A: The module can evaluate up to 60 input signals and map them to 16 relay outputs using configurable logic.
Q: Is redundant relay configuration supported?
A: Yes, redundancy can be configured to meet safety and availability requirements.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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